Plastic embossing caul

Details Plastic embossing caul Plastic embossing caul

B - Operations, Transporting

29

C

154/78

B29C 1/02 (1980.01)

Patent

CA 1115631

A B S T R A C T A plastic caul for embossing wood panels which preferably comprises a laminate of sheets of epoxy prepreg -- e.g. fiberglass webs impregnated with partially cured epoxy resin -- has been dis- covered. The caul may optionally include a metal core sheet. The embossing face of the caul contains a relief design, usually trans- ferred from a natural wood grain pattern. To form the caul, a mold is first prepared. The mold may comprise a textured wood panel, the design surface of which has been sealed and then coated with a release agent. This treat- ment prevents the panel and future caul from sticking together. Sheets of the epoxy prepreg are then layered onto the treated sur- face of the panel and compressed under heat and pressure conditions against it. In this manner, a relief of the textured design of the wood panel is transferred to the caul as it is further cured. The plastic caul may then be separated from the wood panel and baked until fully cured. The configuration of the wood panel assumed in relief by the plastic caul is thus permanently maintained and the caul may be used for embossing smooth wood panels with the textured design of the panel used in making the mold.

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